Electrical contactor



July 10, 1928.

P. M. TEBBS ELECTRICAL coumc'roa Filed Dec. 1, 1924 2 Sheets-Sheet aulJl l INVENTOR 7"ebb BY ATTORNEYS July-10,1928. 1.677.059

P. M. TEBBS ELECTRICAL CONTACTOR Filed Dec. 1924 2 Sheets-Sheet 2fFi/OQS.

i 50 110 c, Q l Q 71/0312- 1 l i WITNESSES 10/ INVENTOR 7n W. Paul M.71225125 Q A r/W M V ATTORNEYS Patented July l0, "if

PAUL I. TEE B8, 01 KG, PWSYLVAIIA.

' nnncrmcan course-iron.

' Application: filed December 1,1994. serial Io. mm.

This invention relates improvements in. electrical contact'ors and itconsists of the constructions, combinations and arrangements hereindescribed andclalmed.

An ob'ect of the lnvention is to provide an electrical contactor of aconstruction permitting bringing-the conductorwire into d1- rectengagementwith the contact point or surface of an electrical device.

Another object ofthe invention is to provide an electrical contactor inthe nature ot a clip to which the conductor wire is so applied'thatdirect contact of the contact point or surface of an evacuated vessel ortube as used for radio receivin broadcasting or lighting may be obtaineAnother object of the invention is'to provide an electrical contactor bythe use of which the usually numerous contact ieces and conductors in alarge variet o electrical devices may be eliminate thereby working aneconomy by reducing mrrent,v losses and further, simplifying and reducmgthe work of assembling parts.

Another object of the invention is to'employ deformedwire in connectionwith the contactor for the purpose of establishing a contact surface..1-

Other-objects and advantages will appear in the following specification,reference ing had to the accompanying drawings, in which n Y I Figure 1is a sectional viewof a radio tube socket illustrating one of thecontactors.

Figure 2 is a plan view of 'thesocket, parts being shown in section asit would appear substantially on the line .22'of 'Figure 1.

Figure 3 is a plan view of the contacto'r blank before bending. I p

Figure is a detail perspective view of the contactor bent into the shapethat it finally assumes when incorporated in the socket.

Figure 5 is a detail perspective view of the middle nut inconnectionwith the contactor;

Figure 6 is'a detail perspective viewjof the deformed wire'used inconnection the contactorg a Figure 7 'i'sa detail section on the 1-7 ofFigure 2.

Figure 8 isa plan'view -in which enough is shown in section to disclosethe position of one of the contactorsthe constructio being thatofamodification. I v

' are omitted Useis made of "a deformed wire 15' '16). to aid intheintended function o fcontactor. This wiremay either be square 'asshown or it may be ronnd, but in anyis flattened at'lfi' to provide 106whee,- a be Figure 9 is a detail: sectionlon the line 9-9 of Figure 8.

Figure 10 is a the modified form of contactor.

Figure 11 is a detail'perspective view, of the Iileformed wire used inconnection therewit Figure 12 is a plan -,view of the blank from whichthe modified contactor is bent.- v As already stated, the purpose ofthe'invention is to provide a contactor by means I I of which theelectrical cond brought nearer to the surface with which it'is tocontact, in factflis brought into actual contact with such surface; Themaster iS-" out of a blank such'as shown in Figure3. The blank is madeof a suitable Y conducting material, usually copper, brass or the like,and it'is-stamped out of sheets of the material by means of suitable ma-I chinery.

bent up 3. Both-the blank body and clip on have holes-4 and 5respectively these obviously bemiddle' nut 9.

Extending from the blank body is a shank 10. Theshank is narrower thanthe blank I "body thereby preventing an offset arrangement of the shankin respect to the blank body. This arrangement, as .will later a pear,is' for the purpose of centering v '0 wire or other conductor ,inrespect'to' the contactor. The'shank has a pairof lateral or side lugs1,'and an end lug 12." These various lugs have. crimping lines or scoredplaces 13 and lrespect vely to permit bend. ing up into-final shape. Thefinal shape of the contactor iswell shown in .Fi but here-both the wireandthe mid nut event one end a rather broad contactable surface.flattened end 16 providesan ample contactable surface, and in practiceis dprzlfleerably either plated or to provi detail perspective view' 'ofi The blank body 1 is crimped or has it '2 to define what later becomesthe cli end only'to met "m the deformed end .and' not apply the ment tothe whole wire.

Reference is'now had to Figures 1 and 2. 17 .is to be regarded as aconventional Socket foisholding the base 18 of a radiotube 19,

whet er the tube be of the type, for receiving or tr nsmittin The use ofthe invention is. not confine .to radiowork, but 'may be Y extended .toan innumerably'variety of other electrical appliances. The base of thesocket carrie's a'plurality of binding posts- (usually four) of whichthe screw. 6 is the only one herein shown or mentioned. The other threecontactors'will be identical with the one already described.

The screw 61s inserted in the base 20 fro'm'v the :-'underside and isscrewed .through the,

clip".'end 3,middle nut 9, and blank 1, f the latter havingbeenappropriatelyj bent on; thetscored lines 2'toenclose the middle nut,and. reach; the position shown in Fi re .1. The deformedwire 15 is heldupon t e contactor'by bendingthe side lugs 7 and the end: lugs 12 overthe flattened end 16 as shown.

The-wire one side of the screw 6 (Fig.

2),"a wa er 21an'd thumb screw 22 being used to clamp the-wire down uponthe contactor.

The engagement of the lug 8 of the nut 9..

withlthe notch- 7 in the blank body 1-pre vents the nutfrojm turnin gThecontactor thereby-incidentally prov-ides "a not lock.

' It. is,t'o be noted that, ashereinbefore, the

w'ire15'assumes acentral position in respect tofthe' shank -1Q Itjisnecessary thatthe wire 15. pass tooneside of the screw 6. The chank istherefore offset invrelation to the blank" 1 so that the wire may becentralized as esired. The shank 10 passes throughfanopening; 23in thesocket 17. The tube base 18 has a plurality of prongs own in the ofwhich I onl the prong 24 y is s drawings; ponfinserting the tube -in the,making a socket the min; engages the contactor irect electrical contactbetween the wire and the terminal of the'tube. By virtue'of the factthat the contactor extends out an ap reciable distance from the screw ,6upon w ich it is mounted, the free .end posseses a su'flicientdegreeofresiliency to insure tight engagement with the. prong orterminal 24.

. 1 The modification in Figures at, 12 is the same as the foregoing formin principle but isfslightly difierent in structure. The body '1 isscored at 2 defining what later becomes v theclipend 3', the body andclip end having openings 411nd .5 for the reception of the screw 6 asbefore. 'The notch 7 receives the lug 8' of the middle nut 9. The shank10",

is scored at 25 to permit a rather peculiar twisting of the shank sothat'the position in Egg-e10 may be assumed.

red. places 26 provide for bending the extremity of the shank so as toproduce a- .the ho shank be ng shaped 'iut'oa springclip' 28 by head 2710). the remaining-part of the which the grong or terminal 24' 18' heldagainst the attened end 16. of the wire 15 in the manner shown in Figure8;

" It is optional whether the wire 15' be merely flattened as'pro'posedin Figure 6 or whether it be left with" a tip 29 as shown in Figures 8and 11. In the latter instance the head 27.i's provided with a hole 30so that the free end of the wire. The main part of the shank 10 is heldin the horizontal lane but it is given both a quarter twist and shout at"the place where it passes throu h' the openingv 23 111 the tube's'ocket17.

e wire-15 is:

also-bent at the base of the flattenedgortion 16; The spring-clip 28restricts t sagefor theprong 24, and' when='the'tube rong can be. forcedin but will then be he d against the is appropriately turned the tip.may project through d th by insure? g of the flattened, but otherwiseflattened surface of the'wire by the resiliency of the spring clip. I

It is estimated that bus wire with flattened portions (so calleddeformed wire) can be manufactured and sold at but a slight additionalcost. The advantages of emwil greatly simplify the installation ofploying such wire in the manner disclosed electrical connections indevices such as'cited inates the need for the'soldering lugs now socommonly used," and furthermore'rt pro videsa means for holding theconductor wire at the lace of contact with utmost reliabil- "and many"other designs; .,.The contactor elimg ity. T e wire will not work looseas it In conclusion, it must be stated in connec-.

the bent end. The 0 ening'in the tube socket must be large enoug toadmit the head 27, and'when the head is admitted the rest 'ofthecontactor may be fixed upon the socket base sometimes does with theordinary binding in the manner already described in connection withFigure 1. v I While the construction and arrangement of the improvedcontactor is that ofa generally preferred form, obviously modifies--tions and changes may be made without departing from the spirit'of theinvention or the scope of the claims.

Y I cla1m:-

1. The combination of a socket having. an

opening, ail-electrical conductor includinga wire, and-a support mountedupon the socket, extending through the opening and holding opening,

a portion of the wire in position for direct contact by an applianceinserted in said socket, said support having means withwhich the wireengages for stabilization.

2. The combination of a socket having an opening and a base, anelectrical conductor including a wire extending through the a contactorextending through the opening and providing a support for a portion ofthe wire in position for direct con-- tact by an electrical applianceinserted in the socket,

said contactor havingb naeans by in mgst on the ase against e which thewire is held," and. a by which the contactor is held u and by which thewire-is clam contactor.

3. A contaetor' comprising a. blank body Y the notch a lationship to -isaid body,

with 'a'notch, afeli en bent down'and under with a notch aclip end bentdown andy under the a nut situated betweenthe body end having a Inoccupying and clip inding passing ,t rough. the openin in said bod fromt e body and nut and appropriate and ashank extending and side I lugsadapted to be'bent over upon av'wire. 1' 4. A contactor com risinga-blankbody the body, said. c ip and and body. having.registeriniogpenings, a. shank extending from the lationship' to saidbody,

of the shanln post inclu ing a screw -j aving an 01! center rey andhaving an elf center -r e- I and'lugs formed at I the sides andextremities I PAUL M. TEBBSp

